EM35x IEEE 802.15.4 and ZigBee Compliant SoC Family OverviewEM35x Series ZigBee SoCs response to interrupts, the ARM processor enables a small core footprint and best-in-class code density. The EM351 and EM357 ZigBee chips from Silicon Labs are the industry s first ARM Cortex-M3 based family of The performance of the Cortex-M3 processor coupled with SoCs delivering unmatched performance, power the performance of the EmberZNet PRO stack helps consumption and code density in a compact package. deliver network throughput and lower latencies that are unmatched in the industry. The EM351 and EM357 combine a 2.4 GHz IEEE 802.15.4 radio transceiver with a 32-bit microprocessor, flash ZigBee-Compliant Stack and Development memory and RAM with powerful hardware-supported Environment network-level debugging features. Combined with the The EM35x series comes tightly integrated with Silicon powerful ecosystem of ARM tools, these devices and tools Labs EmberZNet PRO software protocol, the industry s enable OEMs to simplify development and accelerate time most deployed and field proven ZigBee compliant stack to market. supporting the ZigBee PRO Feature Set and enhanced The EM35x family is tightly integrated with EmberZNet with unique Silicon Labs innovations. Enabling larger, PRO, Silicon Labs ZigBee-compliant mesh networking denser, sleepier, more mobile, secure and resilient ZigBee software, which is the most deployed ZigBee platform in Networks, EmberZNet PRO stack is a complete ZigBee the market. protocol software package containing all the elements - EM351integrates a programmable ARM Cortex-M3 required for sophisticated mesh networking applications on processor, IEEE 802.15.4 RF radio transceiver, 128 kB Silicon Labs silicon platforms. flash and 12 kB RAM and EmberZNet PRO network pro- The Ember development environment is supported by a tocol stack supporting the ZigBee PRO Feature Set. variety of industry leading IDE s to provide best-in-class - EM357optimized for applications that require more tools to build and debug embedded ZigBee applications. memory, it has 192 kB flash but incorporates all the The Ember Desktop Network Analyzer tool is designed for other characteristics and features of the EM351. developing, compiling, loading and debugging software The EM35x series SoCs can also be used as a network co- onto multiple nodes in a networked environment. The processor, using the Ember EZSP protocol, supported by availability of standard ARM tools and the ARM serial wire EmberZNet PRO 4.3.0 and later version software. and JTAG debug capabilities provides complete instruction level and register level debugging capabilities. The EM351 Low-Power, High Total Budget, Robust Coexistence and EM357 devices support special hardware-based The EM35x family delivers outstanding, industry leading network debugging capabilities to help identify complex performance with a configurable total link budget up to network level interactions that cannot be caught by 11 0 dB, while maintaining the highest level of integration examining a single node. requiring minimal external components. The high transmit Key Features power virtually eliminates the need for an external PA (power amplifier) in most applications, especially in Europe - Industry s first ARM Cortex-M3 based family of ZigBee and Asia. Where a PA is required, the product is designed systems - Add-on kit enables use as a network co-processor to allow an external PA or front end module (FEM) to be - Exceptional, industry-leading RF performance easily connected. - 128 kB (EM351) and 192 kB (EM357) flash variants The EM35x family offers the lowest sleep current of any available ZigBee system in the market. Developers can take - kB 12 RAM advantage of the integrated EmberZNet PRO networking - High code density to accommodate the most library to incorporate short wake cycles. Also, integrated sophisticated applications clocks provide optimized wake-sleep cycles to conserve - Lowest deep sleep current and multiple sleep modes power. - Excellent immunity to other 2.4 GHz devices for reliable The integrated voltage regulator supports a wide range of co-existence operating voltages allowing hardware designs to be - Built in memory protection optimized for lithium-ion or alkaline batteries without - Flexible antenna interface allows easy antenna connection with or without PA additional circuitry. The EM351 and EM357 ZigBee SoCs - Flash guaranteed for 20,000 write cycles, enhances are extremely robust providing exceptional immunity and token storage capability via SIM-EEPROM reliable co-existence with other 2.4 GHz devices in the - AES 128 hardware encryption engine with true random environment. number generator ARM Cortex-M3 Processor - Hardware supported network level debugging with Packet Trace Port The integrated 32-bit ARM Corex-M3 processor provides a - Capable of being ZigBee Coordinator (ZC), full function very high code density, allowing larger applications while device (FFD) and reduced function device (RFD) delivering exceptional performance in a small, power- efficient RISC core. Well recognized for its outstanding computational performance and exceptional system Wireless Copyright 2012 by Silicon Laboratories 8.28.2012EM35x IEEE 802.15.4 and ZigBee Compliant SoC Family Selected Electrical Specifications Parameter Value General Characteristics Deep Sleep Current 0.7 A max (with timer) RX Current 25 mA TX Current 31 mA at +3 dBm Crystal Frequency 24 MHz Operating Temperature Range 40 to 85 C Voltage 2.1 to 3.6 V Package 7 mm x 7 mm, 48-Pin QFN RF Characteristics Data Rate 250 kbps Frequency 2400 to 2500 16 total 5 MHz Channels RX Sensitivity 100 dBm (Normal mode) 102 dBm (Boost mode) Adjacent Channel Rejection 35 dB Alternate Channel Rejection 43 dB 802.11g Rejection 35 dB TX Power 32 dBm to +5 dBm (Normal Mode) 32 dBm to +8 dBm (Boost Mode) Total Link Budget Up to 110 dB Micro Characteristics Flash EM351 128 kB EM357 192 kB RAM 12 kB EM35x Series Functional Block Diagram Wireless Copyright 2012 by Silicon Laboratories 8.28.2012 Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. 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